CSF1R and hepatocellular carcinoma: The methylation data of CSF1R in 50 HCC tissues and their paired ANTs from TCGA (https://portal.gdc.cancer.gov/) database were assessed, and 12 CpG probes of the Illumina HumanMethylation450 array in the CSF1R gene were hypomethylated in HCC tissues (Fig. 2B).